Close this search box.

Mining industry welcomes the release of BC’s independent panel report on Mount Polley

Panel’s recommendations will be seriously considered by MAC and its members

Following today’s release of the BC Government-appointed independent panel’s report examining the August 2014 tailings dam failure at the Mount Polley mine in British Columbia, the Mining Association of Canada (MAC) commits to review the information and recommendations with a view to enhancing tailings dam safety.

The independent panel report concludes that the cause of the tailings dam breach was due to a layer of clay underneath the dam that was not taken into account in the original design.  The panel stated that the failure occurred notwithstanding effective regulatory oversight.

“The tailings dam failure at the Mount Polley mine was an unfortunate incident that has been taken seriously by the entire industry,” said Pierre Gratton, MAC’s President and CEO. “While a necessary component of mining, tailings facilities create risks that need to be effectively managed. We believe that every effort must be taken to prevent failures and we support continual advancement in their design, operation and management.”

Immediately following the breach, and while the cause was still unknown at the time, MAC proactively initiated a review of its tailings management program. This included a review of the tailings management requirements of MAC’s mandatory Towards Sustainable Mining (TSM) initiative, as well as the association’s three tailings management guides. The guides are implemented by MAC members as a requirement under TSM, which is considered industry best practice around the world, a point acknowledged by the independent review panel. In consultation with some of the best professionals in this field, this work remains ongoing.  MAC and its members, including technical experts in tailings management, will evaluate the panel’s recommendations to see if there are opportunities to incorporate important findings from their work.

“MAC is honoured by the panel report’s recognition of MAC’s Towards Sustainable Mining initiative as ‘best available practice’ in corporate governance,” added Gratton.  “Nonetheless, best practice can always be improved and we will look at the panel’s recommendations to determine how we might do that.”

TSM is a mandatory program for MAC members, and its requirements go well beyond regulatory obligations. It is designed to improve industry’s performance in key environmental and social areas, including tailings management, and it includes third-party verification of reported results. Both the Mining Association of British Columbia and the Quebec Mining Association have recently adopted TSM and are working with their members on implementation. A major component of TSM includes commitments to ensure the safe operation and management of tailings. In fact, one of the main drivers behind the development of TSM in the late 1990s was to ensure tailings dam safety through strong tailings management practices. Since TSM’s launch in 2004, MAC members have made steady improvement in this area.

Dams that are engineered, constructed, operated and regulated appropriately are safe for mine employees, surrounding communities and the environment. “A tailings failure is unacceptable. However, it is important to note that every day there are hundreds of mines safely operating tailings facilities in Canada,” said Gratton. “The Canadian mining industry is deeply committed to building on the efforts it has made in recent decades in developing a strong track record in safely managing tailings.”


About MAC

The Mining Association of Canada is the national organization for the Canadian mining industry.  Its members account for most of Canada’s production of base and precious metals, uranium, diamonds, metallurgical coal, mined oil sands and industrial minerals and are actively engaged in mineral exploration, mining, smelting, refining and semi-fabrication. Please visit

Related Resources

Guides & Manuals  | 
The Mining Association of Canada (MAC) has drafted several new and revised policies to support the continual improvement of the Towards Sustainable Mining (TSM) program. The aim of these draft[...]

Popular Resources

Report  | 
MAC’s annual flagship publication detailing the latest trends in the Canadian mining industry.

Canadian Mining Stories

The sector is a major economic driver in our Canadian economy and a great contributor to jobs and leading technologies and here are our stories. 

Renee Boucher

As a First Nations woman, Renee Boucher excels at leading the Community and Indigenous Relations Team at New Gold Inc.’s Rainy River mine. Renee leverages her set of skills to...

Jody Kopp

Jody Kopp, Cameco’s Senior Coordinator of Nursing Services, was instrumental in COVID-19 response planning and ensures safety for all employees – she previously worked as an Occupational Health Nurse in...

Subscribe to MAC News

"*" indicates required fields


*Indicates a required field

You can unsubscribe from these communications at any time. For more information on how to unsubscribe, our privacy practices, and how we are committed to protecting and respecting your privacy, please review our Privacy Policy.

By clicking submit, you consent to allow The Mining Association of Canada to store and process the personal information submitted above to provide you the content requested.